Re: [PATCH 0/4] fix snapshot flaws with 4k sectors

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On Mon, Mar 15 2010 at  1:59am -0400,
Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote:

> BTW. if anyone wants to test his code with non-512-byte sector devices, 
> you can use old Seagate U160 SCSI disks (Cheetah XL and before), they can 
> be reformatted to 512-4096 byte sectors with sg_format command. They are 
> no longer being manufactured, you can find them at internet auctions. The 
> current U320 SCSI disks (Cheetah 10K.X or 15K.X) don't support large 
> sectors, they only support 512-528 byte sector-size.

The scsi_debug modules can also be used to create 4K devices.

This is a software-only test-bed but it is bound by the amount of
available ram.

Mike

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